package org.liuyuantao.thread.concurrent;

import java.util.concurrent.Exchanger;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * 两个线程间使用Exchanger进行数据交换,就像卖白粉的和买白粉的毒品交易
 */
public class ExchangerTest {

    public static void main(String[] args) {
        ExecutorService service = Executors.newCachedThreadPool();
        final Exchanger exchanger = new Exchanger();
        service.execute(() -> {
            try {

                String data1 = "zxx";
                System.out.println("线程" + Thread.currentThread().getName() +
                        "正在把数据" + data1 + "换出去");
                Thread.sleep((long) (Math.random() * 10000));
                String data2 = (String) exchanger.exchange(data1);
                System.out.println("线程" + Thread.currentThread().getName() +
                        "换回的数据为" + data2);
            } catch (Exception e) {
                e.printStackTrace();
            }
        });
        service.execute(() -> {
            try {

                String data1 = "lhm";
                System.out.println("线程" + Thread.currentThread().getName() +
                        "正在把数据" + data1 + "换出去");
                Thread.sleep((long) (Math.random() * 10000));
                String data2 = (String) exchanger.exchange(data1);
                System.out.println("线程" + Thread.currentThread().getName() +
                        "换回的数据为" + data2);
            } catch (Exception e) {
                e.printStackTrace();
            }
        });
    }
}
